package cn.jhz.learn.blog.common.util;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

@Component
public class ApplicationContextHelper implements ApplicationContextAware {

	private static ApplicationContext applicationContext;

	@Override
	public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
		ApplicationContextHelper.applicationContext = applicationContext;
	}
	
	public static <T> T popBean(Class<T> clazz){
		if(applicationContext == null) return null;
		
		return applicationContext.getBean(clazz);
	}
	
	public static <T> T popBean(String name,Class<T> clazz){
		if(applicationContext == null) return null;
		
		return applicationContext.getBean(name, clazz);
	}
}
